JP2015082722A - Acoustic controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an acoustic controller which has electromagnetic shielding ability and achieves downsizing of a housing.SOLUTION: An acoustic controller 1 includes a housing 2 including an upper cover 3 having an operation panel surface 11, a lower case 4 formed by a shield member, and a lower cover 5 attached to a surface of the lower case 4 which is opposite to the upper cover 3. An internal space of the housing 2 is divided into an upper space part 21 formed by the upper cover 3 and the lower case 4 and a lower space part 22 formed by the lower case 4 and the lower cover 5 through the lower case 4. A circuit board 7 (a first circuit board) having an operator 12 is disposed in the upper space part 21, and a power supply board 8 (a second circuit board) is disposed in the lower space part 22.

Description

  The present invention relates to an acoustic adjuster used for an audio mixer device, a recorder device or the like.

For example, an acoustic adjuster such as an audio mixer device or recorder device having portability as described in Patent Document 1 includes an upper surface portion on which a large number of operators such as a fader operator and a rotary volume are arranged. A box-shaped casing surrounded by a side surface portion and a bottom surface portion is provided, and a circuit board and the like are accommodated therein.
In general, in this type of acoustic controller, the circuit board or electronic component is not affected by electromagnetic noise from the outside, or the electromagnetic noise generated by the circuit board or electronic component is not affected externally. A shield member that covers the circuit board or the electronic component is disposed.
In the electronic device described in Patent Document 2, a metal sheet that functions as a shield member and a ground member is attached to a part of the outer surface of the housing, and a rubber sheet that covers a surface exposed to the outside of the metal sheet is provided. It is described that the grounding of the circuit board and electromagnetic noise can be shielded by the metal plate.

In many of these electronic devices, a power supply unit is provided separately. However, in recent years, with the progress of miniaturization of parts and the like and high integration on a substrate, the sound adjustment with the power supply unit provided integrally. The vessels are also increasing.
For example, the acoustic adjuster described in Patent Document 3 includes an operator board and an input / output terminal board in an internal space of a housing formed by a metal upper unit and a lower case formed of a synthetic resin. A power supply board is provided. In this acoustic controller, usually, an input / output terminal is arranged behind the operation element (back side) as viewed from the operator in a state where it is installed on a table or the like, and an operation element arranged on the operation panel surface. Because of the difference in height between the input / output terminal components, the operation element board and the input / output terminal board are displaced in the height direction, and the power supply board is disposed below the input / output terminal board.

JP 2007-213099 A JP 2008-192800 A JP 2008-205582 A

In an acoustic controller equipped with a power supply board inside the enclosure, the power supply board and the circuit board inside the enclosure are reduced so that the influence of electromagnetic noise generated from the power supply board on other circuit boards equipped with controls and input / output terminals is reduced. Must be shielded electromagnetically.
However, as in the acoustic adjuster described in Patent Document 3, when the operation board, the input / output terminal board, and the power board are arranged in the housing in a shifted manner in the front-rear direction and the vertical direction, the shape and arrangement of the shield member Is complicated and requires a large installation space, which hinders miniaturization of the housing.

  The present invention has been made in view of such circumstances, and an object thereof is to provide an acoustic adjuster that has electromagnetic shielding properties and can simplify the casing structure.

  The present invention is an acoustic adjuster, and includes an upper cover having an operation panel surface, a lower case made of a shield member, and a lower cover attached to the opposite side of the lower case from the upper cover. The inner space of the casing has an upper space portion formed by the upper cover and the lower case, and a lower space portion formed by the lower case and the lower cover. The first circuit board is disposed in the upper space part, and the second circuit board is disposed in the lower space part.

Since the internal space of the housing is partitioned into an upper space portion and a lower space portion via a lower case made of a shield member, an electronic component disposed in the upper space portion and an electron disposed in the lower space portion The part can be shielded electromagnetically.
Further, the upper space portion and the lower space portion can be separated via a single flat lower case, and the structure of the internal space of the housing can be simplified.
Further, the lower case constitutes a shield plate that shields electromagnetic noise and also serves as an exterior of the acoustic adjuster. Therefore, unlike the conventional case, there is no need for a separate shield plate and exterior parts for noise shielding, the number of parts can be reduced, and the configuration can be simplified and the acoustic controller can be downsized. Therefore, it is possible to reduce the component cost and the manufacturing cost.

The acoustic adjuster of the present invention is an acoustic adjuster having a plurality of operators, wherein the first circuit board is a circuit board having the plurality of operators, and the second circuit board is It may be a power supply board.
Electromagnetic noise generated from the power supply substrate disposed in the lower space is blocked by the lower case, and is difficult to leak to the upper space. Therefore, by providing a power supply board in the acoustic adjuster, the influence of electromagnetic noise on other circuit boards can be largely avoided.

  In the acoustic controller of the present invention, the housing is configured such that a rear portion is higher than a front portion in a state of being placed on a table surface, and is input / output to a rear portion side of the circuit board having the plurality of operating elements A terminal is disposed, the power supply board is disposed below the input / output terminal, and a communication hole is provided in the rear portion of the lower case to communicate the upper space portion and the lower space portion. It is good to have been.

In the state where the acoustic controller is placed on the table surface (stationary state), the rear side of the operation panel surface is configured to be high so that the operator can easily operate, but on the other hand, the high rear portion Heat tends to accumulate in the internal space of the side housing.
Therefore, in the acoustic adjuster of the present invention, the input / output terminals and the power supply board of the circuit board, which are the main heat sources, are arranged behind the acoustic adjuster to avoid heating the circuit portion on the operator side. ing.
Further, by providing a communication hole for communicating the upper space portion and the lower space portion in the rear portion of the lower case, air can be circulated between the upper space portion and the lower space portion. As a result, air heated by the power supply substrate can flow from the lower space portion to the upper space portion, and the rear side of the operation panel surface is raised, so that a plurality of terminal holes opened in the operation panel surface Air easily escapes upward from the part or the like.
Therefore, the heat of the input / output terminal portion of the circuit board and the power supply board is effectively dissipated, and good heat dissipation can be provided even in the internal space of the downsized casing.

  According to the present invention, the upper space portion in which the circuit board is disposed and the lower space portion in which the power supply substrate is disposed are partitioned by the lower case that combines the shield member and the exterior. While providing good electromagnetic shielding to the circuit board, the housing structure can be simplified.

It is a perspective view of an acoustic adjuster concerning one embodiment of the present invention. It is a top view of the acoustic regulator shown in FIG. It is the perspective view which looked at the back of the acoustic regulator shown in FIG. 1 from diagonally upward. FIG. 4 is a perspective view showing a state in which the side panel is removed in the acoustic adjuster shown in FIG. 3. It is sectional drawing which follows the AA line of FIG. It is a disassembled perspective view which shows the relationship between an upper cover, a circuit board, a lower case, an attachment member, a power supply board, and a lower cover. FIG. 6 is a schematic cross-sectional view of the main part of FIG.

Embodiments of the present invention will be described below with reference to the drawings.
1-3 is a figure which shows the acoustic regulator 1 which concerns on one Embodiment of this invention, and is comprised as what is called a mixer apparatus. The acoustic controller 1 has a plurality of operation elements 12 and input / output terminals 13 on the operation panel surface 11 on the upper surface, and although not shown, an audio cable or the like is detachably connected to the input / output terminals 13. It is used in a state where it is connected to another electronic device such as an audio device via the audio cable. Note that the operation element 12 and the input / output terminal 13 and the like are generally provided on the entire surface of the operation panel surface 11, but only a part is shown in the drawing and is omitted by a broken line.

  The acoustic adjuster 1 is installed on a table or the like and used in a stationary manner. The vertical direction of the acoustic adjuster 1 is such that when the stationary controller is used, the direction in which the operation panel surface 11 is located is upward, and the other is downward. And Further, when the acoustic controller 1 is used, a user (operator) is located on the front surface 11 f side of the operation panel surface 11 of the acoustic controller 1. Therefore, unless otherwise specified, the front surface 11f side of the upper cover 3 faces the front side of the acoustic adjuster 1, the rear surface 11b side of the upper cover 3 faces the rear side of the acoustic adjuster 1, and the front surface 11f side faces the rear surface 11b side. The right direction is the right side of the acoustic controller 1, the other is the left side of the acoustic controller 1, the operation panel surface 11 side is the upper side or the front side of the acoustic device 1, and the other is the lower side or the back side of the acoustic controller 1.

As shown in FIG. 5, the acoustic adjuster 1 has an operation panel surface 11 on the upper side and a plurality of legs 14 on the lower side.
As shown in FIG. 6, the housing 2 of the acoustic adjuster 1 includes an upper cover 3 having an operation panel surface 11, a lower case 4 to which the upper cover 3 is attached, and a back surface side of the lower case 4. And a lower cover 5 to be attached. In the example shown in FIG. 3, the casing 2 has a bottom plate portion 15, which will be described later, by combining the upper cover 3, the lower case 4 and the lower cover 5, as shown in FIG. 4. The left side surface portion 18L, the right side surface portion 18R, and the left side surface portion 16L and the right side surface portion 16R of the lower cover 5 are covered. 1 to 3 exemplify the case in which the side panels 6 are attached to both sides of the housing 2 in order to improve the design of the acoustic adjuster 1 or to configure the above-described leg portion 14. The part panel 6 may be omitted as appropriate.
In the acoustic adjuster 1, when the stationary use shown in FIG. 5 is used, the leg portion 14 abuts on the table surface 10, and the bottom plate portion 15 of the lower case 4 and the placement surface portion 16 of the lower cover 5 are arranged on the table. Opposite the surface 10. In addition, the acoustic adjuster 1 has a high (thick) rear side, and is formed so that the operation panel surface 11 is inclined downward toward the front side so that it can be easily operated by the user during stationary use. The The operation panel surface 11 may be installed so as to be a plane parallel to the table surface 10.

  Further, as shown in FIG. 5, the internal space of the housing 2 is a lower space formed by the upper space portion 21 formed by the upper cover 3 and the lower case 4, and the lower case 4 and the lower cover 5. One circuit board 7 (the first circuit board referred to in the present invention) having the side space portion 22 separated by the lower case 4 and having the operation element 12 and the input / output terminal 13 in the upper space portion 21. And the power supply board 8 (second circuit board in the present invention) is provided in the lower space 22.

The upper cover 3 is made of, for example, a metal such as aluminum, and as shown in FIG. 6, the flat upper surface of the upper cover 3 is an operation panel surface 11, and a front portion and a rear portion of the operation panel surface 11 are respectively downward. The front surface portion 17F and the rear surface portion 17B of the acoustic adjuster 1 are formed by bending them. Further, the upper cover 3 is formed with the front surface portion 17F and the rear surface portion 17B bent before and after the operation panel surface 11, thereby increasing the bending rigidity of the upper cover 3 in the left-right direction.
The operation panel surface 11 is formed with a plurality of terminal holes 31 for exposing various operators 12 and input / output terminals 13 mounted on the circuit board 7. Since the terminal height of the input / output terminal 13 is generally higher than that of the operation element 12, the operation panel surface 11 is arranged so that the input / output terminal 13 of the input / output terminal 13 extends along the parts height of the operation element 12 and the input / output terminal 13. The arrangement portion is formed one step higher.
As shown in FIG. 6 and the like, the upper cover 3 is formed by integrally forming the operation panel surface 11, the front surface portion 17F, and the rear surface portion 17B, but the upper cover 3 is formed by combining one or more members. It may be configured.

The lower case 4 is made of a metal made of a shielding member against electromagnetic waves such as iron or stainless steel, for example, and as shown in FIG. 6, a flat bottom plate portion 15 formed along the back surface of the circuit board 7, A left side surface portion 18L and a right side surface portion 18R formed by bending the left and right side portions of the bottom plate portion 15 upward are provided.
Further, the upper portions of the side surface portions 18L and 18R of the left side surface portion 18L and the right side surface portion 18R protruding from the bottom plate portion 15 are bent outwardly in the left-right direction along the front-rear direction, so that the flange portions 41 are formed to extend. Has been. Since the flange portion 41 is formed over the entire length in the front-rear direction on each of the side surface portions 18L, 18R, the bending rigidity in the front-rear direction can be increased, thereby increasing the rigidity in the front-rear direction of the lower case 4 itself. . The bottom plate portion 15 of the lower case 4 is formed to have substantially the same size as the operation panel surface 11 of the upper cover 3 and is fixed below the upper cover 3 so that the above-described upper space portion 21 is partitioned. The

  A plurality of fixing pillars 43 for the circuit board 7 are erected on the bottom plate portion 15, and the circuit board 7 is fixed to the upper end surface of the fixing pillar 43 for the bottom plate portion 15. Moreover, you may arrange | position the some protrusion part which supports the peripheral part of the circuit board 7 in the inner surface of the left-right side parts 18L and 18R of the lower case 4 (illustration omitted). With this mounting structure, the circuit board 7 is disposed above the bottom plate portion 15 and substantially parallel to the bottom plate portion 15.

  As shown in FIG. 5, a plurality of operation elements 12 are arranged on the circuit board 7, and the operation elements 12 are exposed upward on the operation panel surface 11 of the upper cover 3. The operation element 12 includes a function setting component 12a (switches, rotary volume, etc.) as a mixer device, a fader operation element 12b of the fader device, and the like. Further, the upper end portion of the input / output terminal 13 disposed at the rear portion of the circuit board 7 is exposed upward at the rear portion of the operation panel surface 11 of the upper cover 3.

On the opposite side of the upper cover 3 of the lower case 4, the power supply substrate 8 is disposed in the lower half of the lower cover 5 in the latter half portion located below the input / output terminal 13.
As shown in FIG. 4, the lower cover 5 is provided over the almost entire width in the left-right direction at the rear half of the bottom plate portion 15 of the lower case 4 in the front-rear direction. Further, the lower cover 5 is formed by a shield member such as iron or stainless steel, for example, and as shown in FIG. 6, the flat placement surface portion 16 and the left and right side portions and the front portion of the placement surface portion 16 are directed upward. By bending, the left side surface portion 16L, the right side surface portion 16R, and the front surface portion 16F are formed, and the power supply substrate 8 is covered by the rear surface portion 17B of the upper cover 3 and the lower cover 5.
Further, the mounting surface portion 16 is formed to be inclined with respect to the operation panel surface 11, and is provided so that the mounting surface portion 16 is parallel to the table surface 10 when the acoustic adjuster 1 is stationary. Thus, the operation panel surface 11 is installed with a downward slope toward the front surface 11f side. The operation panel surface 11 may be installed so as to be a plane parallel to the table surface 10.

By bending the left side surface portion 16L and the right side surface portion 16R projecting from the placement surface portion 16 of the lower cover 5 and the upper portions of the surface portions 16L, 16R, and 16F of the front surface portion 16F, the upper portions thereof are bent outward along the longitudinal direction thereof. The flange portions 51 are formed to extend. The lower cover 5 is increased in bending rigidity by the flange portions 51, and the lower cover 5 is fixed to the bottom plate portion 15 via the flange portions 51.
The power supply board 8 is fixed to the lower cover 5 via an attachment member denoted by reference numeral 9 in FIG. 5, and is surrounded by the lower surface 5 and the rear surface portion 17B of the upper cover 3. Is done. The power supply board 8 is arranged in a state in which the mounting member 9, the rear surface portion 17B, the left and right side surface portions 16L and 16R, and the front surface portion 16F are covered in all directions, and the bottom plate portion 15 and the mounting surface portion 16 are covered in the vertical direction. Established. Note that the attachment member 9 may be formed of a shield member.

  Further, by attaching the lower cover 5 to the back surface of the rear half portion of the inclined bottom plate portion 15, as shown in FIG. 5, the bottom plate portion 15 and the front surface portion of the lower cover 5 are provided on the back surface portion of the acoustic adjuster 1. Due to 16F, a recess 19 is formed that protrudes upward from the vicinity of the front end to the middle of the latter half. The recessed portion 19 is formed over the entire width of the lower case 4 in the left-right direction, and is provided in communication with the left and right outer sides when the acoustic adjuster 1 is stationary.

The internal space of the housing 2 of the acoustic adjuster 1 configured as described above is formed by the upper space portion 21 formed by the upper cover 3 and the lower case 4, and the lower case 4 and the lower cover 5. The lower space portion 21 is partitioned through the lower case 4, and the circuit board 7 and the power supply substrate 8 are separated from the upper space portion 21 separated by the bottom plate portion 15 of the lower case 4. Arranged in the lower space 22 respectively.
On the other hand, in the lower case 4, at the rear portion of the bottom plate portion 15, at the rear position from the position where the mounting member 9 is disposed, as shown in FIGS. 6 and 7, the upper space portion 21 and the lower space portion 22. One or a plurality of communication holes 44 that communicate with each other are provided, and air can flow between the upper space portion 21 and the lower space portion 22. Note that the form of the communication hole 44 is not limited to a plurality of round holes or square shapes as shown in FIG. 6, but may be formed by, for example, slits, and the arrangement and shape of the heat generated by the circuit components. It can be set arbitrarily in consideration of the exhaust heat path. Further, a part or all of the communication holes may function as a conduction hole of a cable for electrically connecting the circuit board 7 and the like arranged in the upper space portion 21 and the power supply board 8 and the like arranged in the lower space portion 22. Good. Further, the left and right side surface portions 16L, 16R and the placement surface portion 16 of the lower cover 5 are provided with heat radiation slits 53 so that air can be circulated to the outside. In addition, the arrangement | positioning location of the thermal radiation slit 53 is not limited to this.
Further, when the heat dissipating slit 53 is disposed on the placement surface portion 16, the leg portion 14 is ventilated between the bottom surface of the acoustic controller 1 and the table surface in a state where the acoustic controller 1 is installed on the table surface or the like. However, the form is not limited to the form of the legs 14 shown in FIG.

In the acoustic adjuster configured as described above, the internal space of the housing 2 is partitioned into an upper space portion 21 and a lower space portion 22 via a lower case 4 made of a shield member, and the lower space Electromagnetic noise generated from the power supply substrate 8 disposed in the portion 22 is blocked by the lower case 4. For this reason, electromagnetic noise generated from the power supply substrate 8 is difficult to leak to the upper space 21 side. Therefore, the influence of electromagnetic noise on the circuit board 7 due to the provision of the power supply board 8 in the acoustic regulator 1 can be largely avoided.
The upper cover 3 made of aluminum or the like has a shielding effect against the electric field.

Further, since the operation element 12 and the input / output terminal 13 are arranged on one flat circuit board 7, the upper space portion 21 and the lower space portion 22 are connected to each other via one flat lower case 4. The structure of the internal space of the housing 2 can be simplified.
Further, the lower case 4 constitutes a shield plate that shields electromagnetic noise and also serves as the exterior of the acoustic adjuster 1. Therefore, unlike the prior art, it is not necessary to separately provide a shield plate for noise shielding and an exterior part, the number of parts can be reduced, and the structure of the acoustic controller 1 can be reduced by simplifying the configuration. This makes it possible to reduce component costs and manufacturing costs.

In addition, the acoustic adjuster 1 is configured so that the rear side of the operation panel surface 11 becomes higher during stationary use, thereby making it easier for the user to perform the operation. Heat is likely to accumulate in the internal space 2.
In the acoustic regulator 1 of the present embodiment, the power supply board 8 is a main heat source. As shown by the white arrows in FIG. 7, the power supply is provided by the communication holes 44 formed in the rear part of the lower case 4. Since the air heated by the substrate 8 can flow from the lower space portion 22 to the upper space portion 21 and the rear side of the operation panel surface 11 is raised, a plurality of terminal holes opened in the operation panel surface 11 The heated air is easily released from the opening such as the portion 31. In addition to the terminal hole 31 and the like, another heat radiating hole may be provided on the operation panel surface 11.

Furthermore, the outside air flowing in from the heat radiation slit 53 formed in the lower cover 5 flows from the communication hole 44 provided in the bottom plate portion 15 to the upper space portion 21, and a smooth flow of air easily occurs naturally. Air easily escapes upward from a plurality of terminal hole portions 31 and the like opened in the operation panel surface 11.
Therefore, the power supply board 8 and the input / output terminal 13 portion of the circuit board 7 can be effectively cooled, and good heat dissipation can be provided even in the internal space of the downsized casing.

In addition, this invention is not limited to the said embodiment, A various change can be added in the range which does not deviate from the meaning of this invention.
For example, in the above embodiment, one circuit board 7 having the operation element 12 and the input / output terminal 13 is disposed in the upper space portion 21 of the housing 2, and the power supply substrate 8 is disposed in the lower space portion 22. However, the present invention is not limited to this. The present invention aims to shield the electromagnetic influence between the electronic component (first circuit board) arranged in the upper space portion 21 and the electronic component (second circuit board) arranged in the lower space portion 22. In the lower space portion 22, a substrate on which a digital signal processing circuit or the like that operates at a high frequency may be disposed instead of (or in combination with) the power supply substrate 8, In the upper space portion 21, a substrate on which different types of circuit components or the like are disposed may be disposed instead of (or in parallel with) the circuit substrate 7 illustrated in the above embodiment.
Moreover, each member which comprises the housing | casing 2 is not restricted to metal. The resin molded part may be configured by covering or pasting the inner surface with a metal film or the like that functions as a shield member against electromagnetic waves.

DESCRIPTION OF SYMBOLS 1 ... Acoustic regulator, 2 ... Housing, 3 ... Upper cover, 4 ... Lower case, 5 ... Lower cover, 6 ... Side panel, 7 ... Circuit board (1st circuit board), 8 ... Power supply board ( (Second circuit board), 9 ... mounting member, 10 ... desk surface, 11 ... operation panel surface, 11f ... front surface, 11b ... rear surface, 12 ... operator, 12a ... function setting component, 12b ... fader operator, 13 ... Input / output terminal, 14 ... leg, 15 ... bottom plate, 16 ... placement surface, 16F ... front, 16L ... left side, 16R ... right side, 17F ... front, 17B ... rear, 18L ... left side, 18R ... Right side surface portion, 19 ... Recess portion, 21 ... Upper space portion, 22 ... Lower space portion, 31 ... Terminal hole portion, 41 ... Flange portion, 43 ... Fixing column, 44 ... Communication hole, 51 ... Flange portion, 53 ... Radiation slit

Claims (3)

An acoustic controller,
An upper cover, a lower case made of a shield member, and a lower cover attached to the opposite side of the lower case from the upper cover; and an inner space of the casing includes the upper cover An upper space portion formed by the lower case, and a lower space portion formed by the lower case and the lower cover are separated via the lower case, and the upper space portion An acoustic regulator, comprising: a first circuit board; and a second circuit board disposed in the lower space.   An acoustic controller having a plurality of operating elements, wherein the first circuit board is a circuit board having the plurality of operating elements, and the second circuit board is a power supply board. The acoustic adjuster according to claim 1.   The casing is configured such that a rear portion is higher than a front portion in a state of being placed on a table surface, an input / output terminal is disposed on a rear side of the circuit board having the plurality of operating elements, and the power source The substrate is disposed below the input / output terminal, and a communication hole for communicating the upper space portion and the lower space portion is provided in a rear portion of the lower case. The acoustic adjuster according to claim 2.

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